ColorDialog 类

表示一个通用对话框，该对话框显示可用的颜色以及允许用户定义自定义颜色的控件。

**命名空间:**System.Windows.Forms
**程序集:**System.Windows.Forms（在 system.windows.forms.dll 中）

语法

声明
Public Class ColorDialog
    Inherits CommonDialog
用法
Dim instance As ColorDialog

public class ColorDialog : CommonDialog

public ref class ColorDialog : public CommonDialog

public class ColorDialog extends CommonDialog

public class ColorDialog extends CommonDialog

备注

必须调用继承的成员 ShowDialog 才能创建此特定的通用对话框。可重写 HookProc 以实现特定的对话框挂钩功能。使用 Color 可检索用户选定的颜色。

在创建 ColorDialog 的实例时，一些读/写属性被设置为初始值。有关这些值的列表，请参见 ColorDialog 构造函数。

示例

下面的示例阐释如何创建新的 ColorDialog。此示例要求从一个现有窗体调用该方法，且该窗体上须有一个 TextBox 和 Button。

Private Sub button1_Click(sender As Object, e As System.EventArgs)
    Dim MyDialog As New ColorDialog()
    ' Keeps the user from selecting a custom color.
    MyDialog.AllowFullOpen = False
    ' Allows the user to get help. (The default is false.)
    MyDialog.ShowHelp = True
    ' Sets the initial color select to the current text color,
    MyDialog.Color = textBox1.ForeColor

    ' Update the text box color if the user clicks OK 
    If (MyDialog.ShowDialog() = DialogResult.OK) Then
        textBox1.ForeColor =  MyDialog.Color
    End If

End Sub 'button1_Click

private void button1_Click(object sender, System.EventArgs e)
 {
    ColorDialog MyDialog = new ColorDialog();
    // Keeps the user from selecting a custom color.
    MyDialog.AllowFullOpen = false ;
    // Allows the user to get help. (The default is false.)
    MyDialog.ShowHelp = true ;
    // Sets the initial color select to the current text color.
    MyDialog.Color = textBox1.ForeColor ;
    
    // Update the text box color if the user clicks OK 
    if (MyDialog.ShowDialog() == DialogResult.OK)
        textBox1.ForeColor =  MyDialog.Color;
 }
    

private:
   void button1_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      ColorDialog^ MyDialog = gcnew ColorDialog;
      // Keeps the user from selecting a custom color.
      MyDialog->AllowFullOpen = false;
      // Allows the user to get help. (The default is false.)
      MyDialog->ShowHelp = true;
      // Sets the initial color select to the current text color.
      MyDialog->Color = textBox1->ForeColor;
      
      // Update the text box color if the user clicks OK 
      if ( MyDialog->ShowDialog() == ::DialogResult::OK )
      {
         textBox1->ForeColor = MyDialog->Color;
      }
   }

protected void button1_Click(Object sender, System.EventArgs e)
{
    ColorDialog myDialog = new ColorDialog();
    // Keeps the user from selecting a custom color.
    myDialog.set_AllowFullOpen(false);
    // Allows the user to get help. (The default is false.)
    myDialog.set_ShowHelp(true);
    // Sets the initial color select to the current text color.
    myDialog.set_Color(textBox1.get_ForeColor());
    // Update the text box color if the user clicks OK 
    if (myDialog.ShowDialog().Equals(get_DialogResult().OK)) {
        textBox1.set_ForeColor(myDialog.get_Color());
    }
} //button1_Click

继承层次结构

System.Object
   System.MarshalByRefObject
     System.ComponentModel.Component
       System.Windows.Forms.CommonDialog
        System.Windows.Forms.ColorDialog

线程安全

此类型的任何公共静态（Visual Basic 中的 Shared）成员都是线程安全的，但不保证所有实例成员都是线程安全的。

平台

Windows 98、Windows 2000 SP4、Windows CE、Windows Millennium Edition、Windows Mobile for Pocket PC、Windows Mobile for Smartphone、Windows Server 2003、Windows XP Media Center Edition、Windows XP Professional x64 Edition、Windows XP SP2、Windows XP Starter Edition

.NET Framework 并不是对每个平台的所有版本都提供支持。有关受支持版本的列表，请参见系统要求。

版本信息

.NET Framework

受以下版本支持：2.0、1.1、1.0

请参见

参考

ColorDialog 成员
System.Windows.Forms 命名空间
CommonDialog